According to Ethan Mollick on X, the Bank of England has made research datasets available for experimentation, offering structured time series suitable for training and evaluating machine learning models in macro forecasting, financial stability, and payments analysis, as reported by the Bank of England research datasets portal. According to the Bank of England, the repository includes macroeconomic indicators, banking sector metrics, and market data that can power supervised learning benchmarks, stress testing simulations, and nowcasting pipelines for fintech and regtech applications. As reported by the Bank of England, practitioners can leverage the datasets to fine tune transformer models for inflation nowcasting, build anomaly detection for liquidity risk, and test reinforcement learning policies for market microstructure, enabling faster prototyping and measurable backtests with documented data provenance.